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2 protocols using 4 styrenesulfonic acid sodium salt hydrate nass

1

Chondrogenic Differentiation Assay

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All reagents were purchased at Sigma (Munich, Germany) unless otherwise indicated. 4-Styrenesulfonic acid sodium salt hydrate (NaSS) was from Sigma-Aldrich (cat. no. 434574). The anti-SOX9 (C-20) antibody was from Santa Cruz Biotechnology (Heidelberg, Germany), the anti-type-II collagen (AF-5710) and anti-type-I collagen (AF-5610) antibodies from Acris (Hiddenhausen, Germany), and the anti-type-X collagen (COL-10) antibody from Sigma. The biotinylated secondary antibodies and ABC reagent were from Vector Laboratories (Alexis Deutschland GmbH, Grünberg, Germany). The AAVanced Concentration Reagent was from System Bioscience (Heidelberg, Germany) and the Cell Proliferation Reagent WST-1 from Roche Applied Science (Mannheim, Germany).
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2

Fluorescent Polymer Synthesis Protocol

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Materials 4-Styrenesulfonic acid sodium salt hydrate (NaSS, Sigma-Aldrich), 2,2 0 -azobis(2-methylpropionitrile) (AIBN, 98%, Sigma-Aldrich), methanol (MeOH, absolute HPLC, Biosolve Chimie), divinylbenzene (DVB, technical grade 80%, Sigma-Aldrich), methacryloxyethyl thiocarbamoyl rhodamine B (PolyFluor s 570, Polysciences), ammonium hydroxide (NH 4 OH, 28-30 wt% in water, Acros Organics), 3-(trimethoxysilyl)propyl methacrylate (TPM, Z97%, Sigma-Aldrich), dimethyl sulfoxide (DMSO, Sigma-Aldrich), gellan gum (gellan, powder, Alfa Aesar), ethanol (EtOH, absolute, VWR Chemicals), Norland optical adhesive 81 (UV glue, Norland), pyrromethene BODIPY TM 493/503 (BODIPY, Invitrogen TM ), potassium chloride (KCl, Z99%, Acros Organics), n-decane (Z99%, Carl Roth GmbH) and hydrochloric acid (HCl, 37% in water, Acros Organics) were used as received. Styrene (Z99%, containing 4-tert-butylcatechol as a stabilizer, Sigma-Aldrich) was purified through a column packed with silica gel (high purity grade: Davisil Grade 633, Sigma-Aldrich) and aluminum oxide powder (Z98%, Honeywell Fluka). The water used in all experiments was purified by filtration through Millipore filters (18.2 MO cm at 25 1C).
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